Categories

Where more than one value applies, the tag value should be a semi-colon separated list.

Category (CATROS)

seamark:radio_station:category

Definition

Rendering

Circular (non-directional) marine or aero-marine radiobeacon

omnidirectional

A radio station which need not necessarily be manned, the emissions of which, radiated around the horizon, enable its bearing to be determined by means of the radio direction finder of a ship.

Directional radiobeacon

directional

A special type of radiobeacon station, the emissions of which are intended to provide a definite track for guidance.

Rotating pattern radiobeacon

rotating_pattern

A special type of radiobeacon station emitting a beam of waves to which a uniform turning movement is given, the bearing of the station being determined by means of an ordinary listening receiver and a stop watch. Also referred to as a rotating loop radiobeacon.

Consol beacon

consol

A type of long range position fixing beacon.

Radio direction-finding station

rdf

A radio station intended to determine only the direction of other stations by means of transmission from the latter.

Coast radio station providing QTG service

qtg

A radio station which is prepared to provide QTG service, that is to say, to transmit upon request from a ship, a radio signal, the bearing of which can be taken by that ship.

Aeronautical radiobeacon

aeronautical

A radio beacon designed for aeronautical use.

Decca

decca

The Decca Navigator System is a high accuracy, short to medium range radio navigational aid intended for coastal and landfall navigation.

Loran C

loran

Loran-C is a low frequency electronic position fixing system using pulsed transmissions at 100 Khz.

Differential GPS

dgps

A radiobeacon transmitting DGPS correction signals.

Toran

toran

Toran is an electronic position fixing system used mainly by aircraft.

Omega

omega

Omega is a long-range radio navigational aid which operates within the VLF frequency band. The system comprises eight land based stations.

Syledis

syledis

Syledis is a ranging position fixing system operating at 420-450MHz over a range of up to 400Km.

Chiaka (Chayka)

chiaka

Chiaka is a low frequency electronic position fixing system using pulsed transmissions at 100 Khz.

Public communication (for conversations)

public_communication

Public communication (for conversations)

Commercial broadcast

commercial_broadcast

Commercial broadcast.

Facsimile transmission

facsimile

Facsimile transmission.

Time signal

time_signal

Time signal.

Physical AIS

ais

An AIS radiobeacon on a seamark that reports its own position

Synthetic AIS

s-ais

An AIS radiobeacon that transmits the position of a seamark, but where the transmitter is elsewhere.

Virtual AIS (IALA function unknown)

v-ais

An AIS radiobeacon that transmits the position of a virtual aid to navigation. No physical seamark is present at the this location.

Virtual AIS (North Cardinal Mark)

v-ais_north_cardinal

An AIS radiobeacon that transmits the position of a virtual north cardinal mark.

Virtual AIS (South Cardinal Mark)

v-ais_south_cardinal

An AIS radiobeacon that transmits the position of a virtual south cardinal mark.

Virtual AIS (East Cardinal Mark)

v-ais_east_cardinal

An AIS radiobeacon that transmits the position of a virtual east cardinal mark.

Virtual AIS (West Cardinal Mark)

v-ais_west_cardinal

An AIS radiobeacon that transmits the position of a virtual west cardinal mark.

Virtual AIS (Port Lateral Mark)

v-ais_port_lateral

An AIS radiobeacon that transmits the position of a virtual part lateral mark.

Virtual AIS (Starboard Lateral Mark)

v-ais_starboard_lateral

An AIS radiobeacon that transmits the position of a virtual starboard lateral mark.

Virtual AIS (Isolated Danger Mark)

v-ais_isolated_danger

An AIS radiobeacon that transmits the position of a virtual isolated danger mark.

Virtual AIS (Safe Water Mark)

v-ais_safe_water

An AIS radiobeacon that transmits the position of a virtual safe water mark.

Virtual AIS (Special Purpose Mark)

v-ais_special_purpose

An AIS radiobeacon that transmits the position of a virtual special purpose mark.

Virtual AIS (Emergency Wreck Mark)

v-ais_wreck

An AIS radiobeacon that transmits the position of a virtual emergency wreck mark.

Other Attributes

Attribute

seamark:radio_station:<attribute>

Value type

Definition

Call sign (CALSGN)

callsign

Text

The designated call-sign of a radio station.

Communication channel (COMCHA)

channel

Text

A channel number assigned to a specific radio frequency, frequencies or frequency band.

Estimated range of transmission (ESTRNG)

range

Decimal

The estimated range of a non-optical electromagnetic transmission.

Orientation (ORIENT)

orientation

Decimal

The angular distance measured from true north to the maxima of the main lobe.